US PATENT SUBCLASS 525 / 250
.~.~.~.~.~.~ Metal atom is Group IA metal atom (Li, Na, K, Rb, Cs, Fr)


Current as of: June, 1999
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525 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {4}
50  DF  .~ MIXING OF TWO OR MORE SOLID POLYMERS; MIXING OF SOLID POLYMER OR SICP WITH SICP OR SPFI; MIXING OF SICP WITH AN ETHYLENIC AGENT; MIXING OF SOLID POLYMER WITH A CHEMICAL TREATING OR ETHYLENIC AGENT; OR PROCESSES OF FORMING OR REACTING; OR THE RESULTANT PRODUCT OF ANY OF THE ABOVE OPERATIONS {32}
55  DF  .~.~ At least one solid polymer derived from ethylenic reactants only {25}
242  DF  .~.~.~ Polymer derived from ethylenic reactants only mixed with ethylenic reactant {21}
244  DF  .~.~.~.~ Contacting a solid polymer derived from ethylenic reactants only with an ethylenic reactant in the presence of a specified material {14}
248  DF  .~.~.~.~.~ Specified material contains a carbon or hydrogen atom bonded directly to a metal atom {2}
250.~.~.~.~.~.~ Metal atom is Group IA metal atom (Li, Na, K, Rb, Cs, Fr)


DEFINITION

Classification: 525/250

Metal atom is Group IA metal atom (Li, Na, K, Rb, Cs, Fr):

(under subclass 248) Subject matter wherein the metal associated with the metal-to-carbon or metal-to-hydrogen bond is a Group IA (L, Na, K, Rb, Cs, Fr) metal atom.